91 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			91 lines
		
	
	
		
			3.3 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
/**
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 * Usage:
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 *   node scripts/check-environment
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 *
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 * Checks that the expected Node and yarn versions are installed.
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 *
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 *
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 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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 * !!!                                                                                   !!!
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 * !!!  This file is special in that it must be able to execute with wrong Node version  !!!
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 * !!!  or even when node_modules are missing.                                           !!!
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 * !!!                                                                                   !!!
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 * !!!  Do not depend on Node4+ features or presence of npm packages here.               !!!
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 * !!!                                                                                   !!!
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 * !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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 *
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 * This is a slightly simplified, trimmed-down version of
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 * [tools/check-environment.js](https://github.com/gkalpak/angular/blob/3896c60be/tools/check-environment.js).
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 * We use a different file, because some of the tests and error messages are not relevant for `aio/`.
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 */
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'use strict';
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var exec = require('child_process').exec;
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var engines = require(__dirname + '/../package.json').engines;
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var semver;
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// Import `semver`.
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try {
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  semver = require('semver');
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} catch (e) {
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  reportIssues(['You are missing some npm dependencies. Run: yarn install']);
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  console.error(
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      'Your environment doesn\'t provide the prerequisite dependencies.\n' +
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      'Please fix the issues listed above and then rerun the command.\n' +
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      'Check out https://github.com/angular/angular/blob/master/aio/README.md for more info.');
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  process.exit(1);
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}
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// Check Node/yarn versions.
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checkEnvironment({
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  nodeVersion: engines.node,
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  yarnVersion: engines.yarn
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});
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// Helpers
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function checkEnvironment(expected) {
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  exec('yarn --version', function(yarnErr, yarnStdout) {
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    var actualNodeVersion = process.version;
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    var actualYarnVersion = !yarnErr && semver.clean(yarnStdout);
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    var issues = [];
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    // Check Node version.
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    if (!semver.satisfies(actualNodeVersion, expected.nodeVersion)) {
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      issues.push(
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          'You are running an unsupported Node version. Expected: ' + expected.nodeVersion +
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          ' Found: ' + actualNodeVersion + '. Use nvm to update your Node version.');
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    }
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    // Check yarn version.
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    if (yarnErr) {
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      issues.push(
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          'You don\'t have yarn globally installed. This is required if you want to work on this ' +
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          'project. Installation instructions: https://yarnpkg.com/lang/en/docs/install/');
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    } else if (!semver.satisfies(actualYarnVersion, expected.yarnVersion)) {
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      issues.push(
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          'You are running an unsupported yarn version. Expected: ' + expected.yarnVersion +
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          ' Found: ' + actualYarnVersion + '. For instructions see:' +
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          ' https://yarnpkg.com/lang/en/docs/install/');
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    }
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    reportIssues(issues);
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  });
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}
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function reportIssues(issues) {
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  if (!issues.length) return;
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  console.warn('');
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  console.warn('!'.repeat(110));
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  console.warn('!!!  Your environment is not in a good shape. The following issues were found:');
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  issues.forEach(function(issue) { console.warn('!!!   - ' + issue); });
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  console.warn('!'.repeat(110));
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  console.warn('');
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  if (process.env.CI) {
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    process.exit(1);
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  }
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}
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